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Related Experiment Videos

Verifying loudness perception after hearing aid fitting.

R M Cox1, G A Gray

  • 1The Department of Veterans Affairs Medical Center, Memphis, TN, USA.

American Journal of Audiology
|January 26, 2002
PubMed
Summary
This summary is machine-generated.

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Establishing a "normal" loudness perception criterion for hearing aid fitting verification is crucial. This study found that sound field listening, not earphone listening, provides appropriate normative data for assessing amplified sound loudness.

Area of Science:

  • Audiology
  • Hearing Science
  • Psychoacoustics

Background:

  • Hearing aid fitting verification requires a "normal" loudness perception criterion for amplified sounds.
  • Current verification methods may lack a suitable normative reference for sound field listening.

Purpose of the Study:

  • To determine parameters for a valid "normal" loudness perception criterion for hearing aid fitting verification.
  • To evaluate the suitability of different listening conditions and fitting types for normative loudness data.

Main Methods:

  • Collected loudness perception data from 30 normal-hearing listeners using the Contour test.
  • Compared loudness growth functions obtained from earphone and sound field listening.

Main Results:

Related Experiment Videos

  • Loudness growth functions from earphone listening are inappropriate for hearing aid fitting verification.
  • Normative data should be based on sound field listening and can apply to unilateral/bilateral fittings.
  • A previously published automated normative function was not replicated with a manual procedure.

Conclusions:

  • Sound field listening is essential for establishing normative loudness data in hearing aid verification.
  • Further research is needed to establish a replicable normative function for loudness normalization.
  • Practitioners may need to generate local norms for postfitting verification until a standard is available.